Current sheet models for solar prominences. I Magnetohydrostatics of support and evolution through quasi-static models

Details Current sheet models for solar prominences. I Magnetohydrostatics of support and evolution through quasi-static models Current sheet models for solar prominences. I Magnetohydrostatics of support and evolution through quasi-static models

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...123...80m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 123, no. 1, June 1983, p. 80-88.

Mathematics

Complex Variables

71

Current Sheets, Magnetohydrodynamics, Solar Magnetic Field, Solar Prominences, Complex Variables, Homomorphisms, Magnetic Field Configurations, Magnetostatics, Photosphere, Velocity Distribution

Scientific paper

Several 2D current sheet models for solar prominences, supported against gravity by potential magnetic configurations, are presented. Simple magnetostatic solutions, both of Kuperus-Raadu type (KR) and of Kippenhahn-Schlüter type (KS) are built with the help of complex functions and discussed. The authors suggest that, in the case of KS models, slow (<100 ms-1) diverging photospheric flows below prominences could explain the upward motions reported by Malherbe et al. (1983) in disk filaments; while, in the case of KR models, slow converging flows could explain them. To account for such motions and magnetic field observations by Leroy et al. (1983) it is proposed in Raadu's spirit (1979), a quasi-static reconnection model, in which new material entering the prominence condenses and is brought up through it by the moving magnetic field. The resulting dynamics is studied in a simple magnetic geometry of KR type.

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